CN210041320U

CN210041320U - Surge protector for socket

Info

Publication number: CN210041320U
Application number: CN201921393154.6U
Authority: CN
Inventors: 吕兵; 吕阳
Original assignee: Chengdu Lester Technology Co Ltd
Current assignee: Chengdu Lester Technology Co Ltd
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2020-02-07
Anticipated expiration: 2029-08-26

Abstract

The utility model discloses a surge protector for on socket, including protector body and the surge protection module of being connected therewith, the surge protection module includes three GMOV module, and wherein connect in parallel with another GMOV module after two GMOV modules establish ties, and ground connection between two GMOV modules of series connection setting. The utility model discloses a set up three GMOV module, can be more effectual prevent the surge, thereby protect electrical components not punctured by the thunder and lightning, and be equipped with input and output on the protector body, input and output are three hole plugs, easy to assemble, carry and remove, plug-and-play, after the electrical apparatus is inserted in the output, can form the series connection with back level electrical apparatus, can realize effectual surge protection to the back level, and simultaneously, wherein connect in parallel with another GMOV module and set up after two GMOV modules establish ties, can realize the protection to parallelly connected and near this equipment all electrical apparatus, realize establishing ties and parallelly connected duplicate protection.

Description

Surge protector for socket

Technical Field

The utility model relates to an electrical protection equipment technical field, especially a surge protector for on socket.

Background

Surge refers mainly to a strong pulse generated by the moment when the power supply is just turned on, and the pulse may be higher than the power supply due to the nonlinearity of the circuit itself, or the surge is called because the power supply or other parts in the circuit are interfered by the pulse itself or an external sharp pulse. The circuit is likely to be burnt out at the moment of surge, such as PN junction capacitor breakdown, resistance burning-out and the like, and the surge protection is a protection circuit which is designed by utilizing the sensitivity of a nonlinear element to high frequency (surge).

A surge protector, also called a lightning protector, is an electronic device for providing safety protection for various electronic equipment, instruments and meters and communication lines. When spike current or voltage is suddenly generated in an electric loop or a communication line due to external interference, the surge protector can conduct and shunt in a very short time, so that damage of surge to other equipment in the loop is avoided.

The type and construction of the surge protector will vary from application to application, but it should include at least one non-linear voltage limiting element. The basic components for surge protectors are: discharge gap, gas discharge tube, varistor, suppressor diode, choke coil, and the like.

The gas discharge tube is composed of a pair of cold cathode plates spaced apart from each other and enclosed in a glass tube or a ceramic tube filled with a certain inert gas (Ar). In order to increase the triggering probability of the discharge tube, a triggering agent is also introduced into the discharge tube, and such gas-filled discharge tubes are of the bipolar type as well as of the tripolar type.

The voltage-limiting type protection device is a voltage-limiting type protection device, and the voltage-limiting type protection device is a metal oxide semiconductor nonlinear resistor with Zn0 as a main component. By utilizing the nonlinear characteristic of the piezoresistor, when overvoltage appears between two poles of the piezoresistor, the piezoresistor can clamp the voltage to a relatively fixed voltage value, thereby realizing the protection of a post-stage circuit.

According to the working principle, the common surge protector is divided into: 1. a switch type: its working principle is that it presents a high impedance when there is no transient overvoltage, but once it responds to the lightning transient overvoltage, its impedance is abruptly changed to a low value, allowing the lightning current to pass. When used as such a device, the devices are: discharge gaps, gas discharge tubes, thyristors, etc. 2. Pressure limiting: the working principle is that the surge voltage is high-impedance when no transient overvoltage exists, but the impedance is continuously reduced along with the increase of surge current and voltage, and the current-voltage characteristic is strongly nonlinear. Devices used as such devices are: zinc oxide, piezoresistors, suppressor diodes, avalanche diodes, and the like.

At present, a single gas discharge tube or a single piezoresistor is mostly adopted in common surge protectors, although the common surge protectors can protect circuits, the protection effects are poor, the common surge protectors can be easily broken down by large lightning, the safety is not high, the common surge protectors can only protect electric appliances connected in series behind the common surge protectors, the electric appliances connected in parallel with the common surge protectors cannot be protected, and the protection range is small.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that just to above-mentioned prior art not enough, provide a simple to operate, security performance height and can establish ties surge protector for on socket of parallelly connected duplicate protection.

In order to realize the above purpose, the technical scheme of the utility model is as follows:

a surge protector for a socket comprises a protector body and a surge protection module connected with the protector body, wherein the surge protection module comprises three GMOV modules, two of the GMOV modules are connected in series and then connected with the other GMOV module in parallel, and the two GMOV modules which are connected in series are grounded.

Preferably, the protector body is provided with an input and an output, and the input and the output are both three-hole plugs.

Preferably, the GMOV module employs a GMOV-14D321K-ND protection element.

Compared with the prior art, the beneficial effects of the utility model are that:

through setting up three GMOV module, can be more effectual prevent the surge, thereby protect electrical components not punctured by the thunder and lightning, and be equipped with input and output on the protector body, input and output are three hole plugs, easy to assemble, carry and remove, plug-and-play, after the electrical apparatus is inserted in the output, can form the series connection with the back level electrical apparatus, can realize effectual surge protection to the back level, and simultaneously, wherein connect in parallel with another GMOV module and set up after two GMOV modules establish ties, can realize parallelly connected with near this equipment's all electrical apparatus's protection, realize establishing ties and parallelly connected duplicate protection.

Drawings

Fig. 1 is a schematic diagram of the circuit structure of the present invention.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention:

as shown in fig. 1, the surge protector for a socket provided by this embodiment includes a protector body and a surge protection module connected thereto.

Be equipped with 220V input all the way and 220V output all the way on the protector body, input and output all adopt the mode of three hole plugs of standard, easy to assemble, carry and remove, and the input can be directly pegged graft with outside socket etc. plug-and-play, has improved the application scope of whole equipment.

The surge protection module comprises three GMOV modules, the GMOV modules adopt Bourns novel GMOV-14D321K-ND protection elements and comprise gas discharge tubes and metal oxide piezoresistors which are arranged in series, the maximum continuous working voltage rated value of the surge protection module is 320Vrms, the surge current Ifsm is 6KA, higher safety and overvoltage protection with longer service life are provided, the damage of extra voltage is better dealt with, and the leakage current (Ir) of the surge protection module is 0.1uA, so that the heating damage caused by the leakage current is favorably eliminated. By simultaneously arranging the three GMOV modules, after the output is inserted into an electric appliance, the three GMOV modules can be connected with a rear-stage electric appliance in series, and effective surge protection can be realized for the rear stage.

And two of the three GMOV modules are connected in parallel and then are connected in series with the other GMOV module, and the two GMOV modules which are connected in parallel are grounded. The protection of all the electric appliances which are connected in parallel and are close to the equipment can be realized, and the dual protection of series connection and parallel connection is realized.

This embodiment is through setting up three GMOV module, can be more effectual prevent the surge, thereby protect electrical components not punctured by the thunder and lightning, and be equipped with input and output on the protector body, input and output are three hole plugs, easy to assemble, carry and remove, plug-and-play, after output inserts the electrical apparatus, can form the series connection with back level electrical apparatus, can realize effectual surge protection to the back level, and simultaneously, wherein connect in parallel with another GMOV module behind two GMOV module series connections, can realize the protection to parallelly connected and near this equipment all electrical apparatus, realize series connection and parallelly connected duplicate protection, and the device has the advantages of simple to operate, follow current shielding nature is good, response speed is fast, safety and reliability.

When surge voltage reaches AC320V, the three GMOV modules act rapidly, the gas discharge tube in the GMOV modules breaks down discharge through the gap between the two poles under strong voltage, the original insulation state is converted into a conductive state, and the voltage between the two poles of the discharge tube is maintained at the residual voltage level determined by a discharge arc channel after the discharge tube is conducted; meanwhile, the metal oxide piezoresistor in the GMOV module is subjected to voltage clamping to absorb redundant current, the metal oxide piezoresistor rapidly presents excellent nonlinear conductive characteristics in nanosecond time, and the voltage at two ends of the piezoresistor is rapidly reduced at the moment, so that the effect of protecting an electric appliance is achieved.

The above is only the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any modification and replacement based on the technical solution and the utility model should be covered in the protection scope of the present invention.

Claims

1. The utility model provides a surge protector for on socket, includes protector body and the surge protection module of being connected with it, its characterized in that: the surge protection module comprises three GMOV modules, wherein two GMOV modules are connected in series and then connected in parallel with one another, and the two GMOV modules which are connected in series are grounded.

2. A surge protector for a socket according to claim 1, wherein: the protector body is provided with input and output, and the input and the output are three-hole plugs.

3. A surge protector for a socket according to claim 1, wherein: the GMOV module adopts a GMOV-14D321K-ND protection element.